Random Riddle

The hands on a clock (hour, minute, second).
Hold your mouse over for the answer.
Three brothers share a family sport:
A non-stop marathon
The oldest one is fat and short
And trudges slowly on
The middle brother’s tall and slim
And keeps a steady pace
The youngest runs just like the wind,
A-speeding through the race
“He’s young in years, we let him run,”
The other brothers say
“Because though he’s surely number one,
He’s second, in a way.”